EP3780668A1 - Procédé et dispositif de connexion de liaison terrestre sans fil - Google Patents

Procédé et dispositif de connexion de liaison terrestre sans fil Download PDF

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Publication number
EP3780668A1
EP3780668A1 EP18916462.7A EP18916462A EP3780668A1 EP 3780668 A1 EP3780668 A1 EP 3780668A1 EP 18916462 A EP18916462 A EP 18916462A EP 3780668 A1 EP3780668 A1 EP 3780668A1
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EP
European Patent Office
Prior art keywords
base station
wireless backhaul
measurement
designated
base stations
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
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EP18916462.7A
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German (de)
English (en)
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EP3780668B1 (fr
EP3780668A4 (fr
Inventor
Wei Hong
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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Publication of EP3780668A1 publication Critical patent/EP3780668A1/fr
Publication of EP3780668A4 publication Critical patent/EP3780668A4/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/32—Hierarchical cell structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/045—Interfaces between hierarchically different network devices between access point and backbone network device
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure generally relates to the field of communication technology, and more particularly, to a method and apparatus for wireless backhaul connection.
  • each small cell Due to the transmission characteristics in high frequency bands, small cells are generally used for high frequency communication. However, if each small cell is configured with a traditional wired backhaul, such as optical fibers, it may result in great expenses, especially in areas where optical fibers may not be deployed, which may cause poor communication in the areas.
  • a traditional wired backhaul such as optical fibers
  • the embodiments of the present disclosure provide a method and apparatus for wireless backhaul connection.
  • a method for wireless backhaul connection applied in a long-term evolution (LTE) base station having a coverage within which a wireless backhaul base station is located, the method including:
  • configuring, for the wireless backhaul base station according to the device type reporting information, the secondary base station used for the wireless backhaul connection includes:
  • the measurement parameter includes at least one of:
  • the measurement quantity of the designated measurement includes a reference signal receiving power (RSRP) or a reference signal receiving quality (RSRQ).
  • RSRP reference signal receiving power
  • RSRQ reference signal receiving quality
  • the measurement result includes an RSRP measurement value or an RSRQ measurement value of each of the designated donor base stations, determining, according to the measurement result, the donor base station capable of providing wireless backhaul services to the wireless backhaul base station from among the designated donor base stations, and configuring the determined donor base station as the secondary base station includes: determining, according to the RSRP measurement value or the RSRQ measurement value of each of the designated donor base stations, the donor base station capable of providing wireless backhaul services to the wireless backhaul base station, and configuring the determined donor base station as the secondary base station.
  • the measurement quantity of the designated measurement includes a load size.
  • the measurement result includes a load measurement value of each of the designated donor base stations, determining, according to the measurement result, the donor base station capable of providing wireless backhaul services to the wireless backhaul base station from among the designated donor base stations, and configuring the determined donor base station as the secondary base station includes: determining, according to the load measurement value of each of the designated donor base stations, the donor base station capable of providing wireless backhaul services to the wireless backhaul base station, and configuring the determined donor base station as the secondary base station.
  • the measurement quantity of the designated measurement further includes a load size;
  • the measurement result includes an RSRP measurement value or an RSRQ measurement value of each of the designated donor base stations, and a load measurement value of each of the designated donor base stations, determining, according to the measurement result, the donor base station capable of providing wireless backhaul services to the wireless backhaul base station from among the designated donor base stations, and configuring the determined donor base station as the secondary base station includes: determining, according to the RSRP measurement value or the RSRQ measurement value of each of the designated donor base stations and the load measurement value of each of the designated donor base stations, the donor base station capable of providing wireless backhaul services to the wireless backhaul base station, and configuring the determined donor base station as the secondary base station.
  • the trigger condition for the designated measurement includes triggering on a periodic basis or triggering by an event.
  • the method further includes: after configuring the secondary base station used for wireless backhaul connection for the wireless backhaul base station, generating a secondary base station indication message, wherein the secondary base station indication message includes a secondary base station identifier; and sending the secondary base station indication message to the wireless backhaul base station, so that the wireless backhaul base station determines the secondary base station used for wireless backhaul connection according to the secondary base station identifier, and establishes a connection with the secondary base station.
  • a method for wireless backhaul connection applied in a wireless backhaul base station that is located within a coverage of a Long Term Evolution (LTE) base station, the method including:
  • sending the device type reporting information to the LTE base station includes: sending the device type reporting information to the LTE base station during a random access process initiated for the LTE base station.
  • sending the device type reporting information to an LTE base station includes: sending the device type reporting information to the LTE base station after a random access process initiated for the LTE base station is completed.
  • the method further includes:
  • the measurement parameter includes at least one of:
  • the measurement quantity of the designated measurement includes a reference signal receiving power (RSRP) or a reference signal receiving quality (RSRQ), measuring each of the designated donor base stations according to the measurement parameter to obtain the measurement result includes: measuring the RSRP or the RSRQ of each of the designated donor base stations, where the obtained measurement result includes an RSRP measurement value or an RSRQ measurement value of each of the designated donor base stations.
  • RSRP reference signal receiving power
  • RSRQ reference signal receiving quality
  • the measurement quantity of the designated measurement includes a load size
  • measuring each of the designated donor base stations according to the measurement parameter to obtain the measurement result includes: measuring the load size of each of the designated donor base stations, where the obtained measurement result includes a load measurement value of each of the designated donor base stations.
  • the measurement quantity of the designated measurement includes an RSRP or an RSRQ, and a load size
  • measuring each of the designated donor base stations according to the measurement parameter to obtain the measurement result includes: measuring the RSRP or the RSRQ and the load size of each of the designated donor base stations, where the obtained measurement result includes an RSRP measurement value or a RSRQ measurement value of each of the designated donor base stations, and a load measurement value of each of the designated donor base stations.
  • the trigger condition for the designated measurement includes triggering on a periodic basis or triggering by an event
  • adding the measurement result into the measurement reporting information when the measurement reporting is performed includes: adding the measurement result into the measurement reporting information when the measurement reporting is triggered on a periodic basis or triggered by an event.
  • the method further includes:
  • an apparatus for wireless backhaul connection applied in a long-term evolution LTE base station having a coverage within which a wireless backhaul base station is located, the apparatus including:
  • the configuring module includes:
  • the measurement parameter includes at least one of:
  • the measurement quantity of the designated measurement includes a reference signal receiving power (RSRP) or a reference signal receiving quality (RSRQ).
  • RSRP reference signal receiving power
  • RSRQ reference signal receiving quality
  • the measurement result includes the RSRP measurement value or the RSRQ measurement value of each of the designated donor base stations
  • the first determining sub-module includes: a second determining sub-module, configured to determine, according to the RSRP measurement value or the RSRQ measurement value of each of the designated donor base stations, the donor base station capable of providing wireless backhaul services to the wireless backhaul base station, and configure the determined donor base station as the secondary base station.
  • the measurement quantity of the designated measurement includes a load size.
  • the measurement result includes a load measurement value of each of the designated donor base stations
  • the first determining sub-module includes: a third determining sub-module, configured to determine, according to the load measurement value of each of the designated donor base stations, the donor base station capable of providing wireless backhaul services to the wireless backhaul base station, and configure the determined donor base station as the secondary base station.
  • the measurement quantity of the designated measurement further includes a load size;
  • the measurement result includes an RSRP measurement value or an RSRQ measurement value of each of the designated donor base stations, and a load measurement value of each of the designated donor base stations
  • the first determining sub-module includes: a fourth determining sub-module, configured to determine, according to the RSRP measurement value or the RSRQ measurement value of each of the designated donor base stations, the donor base station capable of providing wireless backhaul services to the wireless backhaul base station, and the load measurement value of each of the designated donor base stations, and configure the determined donor base station as the secondary base station.
  • the trigger condition for the designated measurement includes triggering on a periodic basis or triggering by an event.
  • the apparatus further includes:
  • an apparatus for wireless backhaul connection applied in a wireless backhaul base station that is located within a coverage of a Long Term Evolution (LTE) base station, the apparatus including:
  • the first sending module includes: a first sending sub-module, configured to send the device type reporting information to the LTE base station during a random access process initiated for the LTE base station.
  • the first sending module includes: a second sending sub-module, configured to send the device type reporting information to the LTE base station after a random access process initiated for the LTE base station is completed.
  • the apparatus further includes:
  • the measurement parameter includes at least one of:
  • the measurement quantity of the designated measurement includes a reference signal receiving power (RSRP) or a reference signal receiving quality (RSRQ), ⁇ the measuring module includes: a first measuring sub-module, configured to measure the RSRP or the RSRQ of each of the designated donor base stations, where the obtained measurement result includes an RSRP measurement value or an RSRQ measurement value of each of the designated donor base stations.
  • RSRP reference signal receiving power
  • RSRQ reference signal receiving quality
  • the measurement quantity of the designated measurement includes a load size
  • the measuring module includes: a second measuring sub-module, configured to measure the load size of each of the designated donor base stations, where the obtained measurement result includes a load measurement value of each of the designated donor base stations.
  • the measurement quantity of the designated measurement includes an RSRP or an RSRQ, and a load size
  • the measuring module includes: a third measuring sub-module, configured to measure the RSRP or the RSRQ and the load size of each of the designated donor base stations, where the obtained measurement result includes an RSRP measurement value or a RSRQ measurement value of each of the designated donor base stations, and a load measurement value of each of the designated donor base stations.
  • the trigger condition for the designated measurement includes triggering on a periodic basis or triggering by an event
  • the adding module includes: an adding sub-module, configured to add the measurement result into the measurement reporting information when the measurement reporting is triggered on a periodic basis or triggered by an event.
  • the apparatus further includes:
  • a non-transitory computer-readable storage medium having stored thereon computer programs configured to execute the method for wireless backhaul connection provided by the above first aspect.
  • a non-transitory computer-readable storage medium having stored thereon computer programs configured to execute the method for wireless backhaul connection provided by the above second aspect.
  • an apparatus for wireless backhaul connection applied in a long-term evolution (LTE) base station having a coverage within which a wireless backhaul base station is located, the apparatus including:
  • an apparatus for wireless backhaul connection applied in a wireless backhaul base station that is located within a coverage of a Long Term Evolution (LTE) base station, the apparatus including:
  • the LTE base station in the embodiments of the present disclosure may configure, for the wireless backhaul base station according to the device type reporting information, the secondary base station used for the wireless backhaul connection after receiving the device type reporting information sent by the wireless backhaul base station, herein the device type reporting information is configured to indicate that the device type of the wireless backhaul base station is a wireless backhaul type.
  • the wireless backhaul base station may transmit data to the core network device by means of the secondary base station configured by LTE, thereby improving the reliability of the wireless backhaul connection and improving the data transmission efficiency of the wireless backhaul base station.
  • the wireless backhaul base station in the embodiments of the present disclosure may send the device type reporting information to the LTE base station after generating the device type reporting information, herein the device type reporting information is configured to indicate that the device type of the wireless backhaul base station is a wireless backhaul type.
  • the LTE base station may configure, for the wireless backhaul base station according to the device type reporting information, the secondary base station used for wireless backhaul connection, and the wireless backhaul base station may also transmit data to the core network device by means of the secondary base station configured by LTE, thereby improving the reliability of the wireless backhaul connection and improving the data transmission efficiency of the wireless backhaul base station.
  • the terms first, second, third, etc. may be used in this disclosure to describe various information, the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • the indication information may also be referred to as second information, and similarly, the second information may also be referred to as indication information.
  • the word “if” as used herein can be interpreted as "when" or "at the time of -- or "in response to the determination that".
  • FIG. 1 is a flowchart of a method for wireless backhaul connection according to an exemplary embodiment
  • FIG. 2 is a diagram of an application scenario of a method for wireless backhaul connection according to an exemplary embodiment
  • the method for wireless backhaul connection may be applied in an LTE (Long Term Evolution) base station having a coverage within which a wireless backhaul base station is located.
  • LTE Long Term Evolution
  • the method for wireless backhaul connection includes the following operations S110-S120.
  • device type reporting information sent by the wireless backhaul base station is received, where the device type reporting information is configured to indicate that a device type of the wireless backhaul base station is a wireless backhaul type.
  • the LTE base station may be a macro base station with a wide coverage
  • the wireless backhaul base station may be an NR (New Radio) small base station that can transmit data to the core network device only by means of the LTE base station or a secondary base station configured by the LTE base station for this wireless backhaul base station.
  • NR New Radio
  • the wireless backhaul base station When the wireless backhaul base station needs the secondary base station to assist in transmitting data, it will generate device type reporting information configured to indicate that the device type of the wireless backhaul base station is a wireless backhaul type, and send the device type reporting information to the LTE base station, so that after receiving the device type reporting information, the LTE base station may configure the secondary base station used for wireless backhaul connection for the wireless backhaul base station.
  • the device type reporting information may be received by the LTE base station during the random access process initiated by the wireless backhaul services, for example, the random access request message includes the device type reporting information; or the device type reporting information may be received after the random access process initiated by the wireless backhaul services is completed, for example, a Radio Resource Control (RRC) message includes the device type reporting information.
  • RRC Radio Resource Control
  • a secondary base station used for wireless backhaul connection is configured for the wireless backhaul base station according to the device type reporting information.
  • the LTE base station after the LTE base station receives the device type reporting information, it can be determined according to the device type reporting information that the device type of the wireless backhaul base station is a wireless backhaul type, and it can also be determined that the wireless backhaul base station requires the LTE base station to configure the secondary base station used for the wireless backhaul connection for it. In this way, the wireless backhaul base station may transmit its own data to the core network device through the secondary base station.
  • the application scenario diagram is a schematic diagram of the NSA (Non-Standalone) architecture, including a core network device, an LTE base station, a donor base stations 1, a donor base stations 2, a donor base station 3 and a wireless backhaul base station; the core network device is outside the coverage of the LTE base station; and the donor base station 1, the donor base station 2, the donor base station 3 and the wireless backhaul base station are all within the coverage of the LTE base station.
  • NSA Non-Standalone
  • LTE base station There is a wired connection between the LTE base station and the core network device, a wired connection between LTE base station and each of the donor base station 1, the donor base station 2 and the donor base station 3, and a wireless connection between LTE base station and the wireless backhaul base station.
  • wired backhaul connection between the LTE base station and each of the donor base station 1, the donor base station 2 and the donor base station 3, and a wireless backhaul connection between the LTE base station and the wireless backhaul base station.
  • the LTE base station may be a macro base station with a wide coverage.
  • the donor base station 1, the donor base station 2, and the donor base station 3 may all be an NR small base station, but they can help the wireless backhaul base station to transmit data to the core network device.
  • the wireless backhaul base station may also be an NR small base station, but it may transmit data to the core network device only by means of an LTE base station (a primary base station for providing wireless backhaul services) or a secondary base station configured by an LTE base station for the wireless backhaul base station (for example, the LTE base station configures the donor base station 1 as the secondary base station).
  • the wireless backhaul base station When the wireless backhaul base station needs to connect to the secondary base station used for wireless backhaul connection, it will generate device type reporting information configured to indicate that the device type of the wireless backhaul base station is wireless backhaul type, and send the device type reporting information to the LTE base station, so that after the LTE base station receives the device type reporting information, it may configure, for the wireless backhaul base station according to the set rules, the secondary base station used for wireless backhaul connection. For example, the LTE base station selects or designates one or more donor base stations from the donor base station 1, the donor base station 2 and the donor base station 3 as the secondary base stations configured for the wireless backhaul base station.
  • the device type reporting information sent by the wireless backhaul base station is received, herein the device type reporting information is configured to indicate that the device type of the wireless backhaul base station is a wireless backhaul type, and the secondary base station used for the wireless backhaul connection is configured for the wireless backhaul base station according to the device type reporting information.
  • the wireless backhaul base station may transmit data to the core network device by means of the secondary base station configured by LTE, thereby improving the reliability of the wireless backhaul connection and improving the data transmission efficiency of the wireless backhaul base station.
  • FIG. 3 is a flowchart of another method for wireless backhaul connection according to an exemplary embodiment.
  • the method for wireless backhaul connection may be applied in the LTE base station having a coverage within which a wireless backhaul base station is located.
  • the method is built on the basis of the method shown in FIG. 1 , and the coverage of the LTE base station also includes multiple donor base stations, both the donor base stations and the wireless backhaul base station may be an NR small base station. As shown in FIG.
  • a donor base station capable of providing wireless backhaul services to the wireless backhaul base station may be determined from among the designated donor base stations according to the measurement result of the wireless backhaul base station, and the determined donor base station may be configured as a secondary base station, and S120 may specifically include the following operations S310-S340.
  • a measurement parameter used to measure each of designated donor base stations is configured, where each of the designated donor base stations is located within the coverage of the LTE base station.
  • the designated donor base stations may refer to all or a part of the donor base stations within the coverage of the LTE base station. As for whether the designated donor base stations are all or a part of the donor base stations, it is determined autonomously by the LTE base station based on the actual situation. For example, as shown in FIG. 2 , each of the designated donor base stations refers to the donor base station 1, the donor base station 2, and the donor base station 3. For another example, as shown in FIG. 2 , each of the designated donor base stations only refers to the donor base station 1 and the donor base station 2.
  • the measurement parameter in S310 may include at least one of:
  • the measurement quantity of designated measurement in the above (1-2) may include:
  • the measurement quantity of designated measurement in (1-2) above may include: a load size.
  • the measurement quantity of designated measurement in (1-2) above may include: an RSRP or an RSRQ, and a load size.
  • a trigger condition for the designated measurement in (1-3) above includes triggering on a periodic basis or triggering by an event.
  • the triggering on a periodic basis refers to triggering measurement reporting according to a certain time period, such as 1 minute;
  • triggering by an event refers to triggering measurement reporting when a designated event happens, such as an RSRP measurement value or an RSRQ measurement value of a donor base station exceeds a certain threshold.
  • the measurement parameter is sent to the wireless backhaul base station, so that the wireless backhaul base station measures each of the designated donor base stations according to the measurement parameter to obtain the measurement result.
  • the wireless backhaul base station will measure the RSRP or RSRQ of each of the designated donor base stations, where the obtained measurement result includes the RSRP measurement value or the RSRQ measurement value of each of the designated donor base stations.
  • the wireless backhaul base station will measure the load size of each of the designated donor base stations, where the obtained measurement result includes the load measurement value of each of the designated donor base stations.
  • the wireless backhaul base station will measure the RSRP or RSRQ and the load size of each of the designated donor base stations, where the obtained measurement result includes the RSRP measurement value or the RSRQ measurement value of each of the designated donor base stations, and the load measurement value of each of the designated donor base stations.
  • measurement reporting information sent by the wireless backhaul base station is received, where the measurement reporting information includes the measurement result.
  • a donor base station capable of providing wireless backhaul services to the wireless backhaul base station is determined from among the designated donor base stations according to the measurement result, and the determined donor base station is configured as a secondary base station.
  • a donor base station capable of providing wireless backhaul services to the wireless backhaul base station may be determined according to the RSRP measurement value or the RSRQ measurement value of each of the designated donor base stations, and the determined donor base station is configured as the secondary base station.
  • the determination method may include but is not limited to the following three:
  • the donor base station capable of providing wireless backhaul services to the wireless backhaul base station is determined according to the load measurement value of each of the designated donor base stations, and the determined donor base station is configured as the secondary base station.
  • the determination method may include but is not limited to the following three:
  • the donor base station capable of providing wireless backhaul services to the wireless backhaul base station is determined according to the RSRP measurement value or the RSRQ measurement value of each of the designated donor base stations, and the load measurement value of each of the designated donor base stations, and the determined donor base station is configured as the secondary base station.
  • a donor base station with a larger RSRP measurement value or a larger RSRQ measurement value and a smaller load measurement value is selected and configured as a secondary base station.
  • the measurement parameter used to measure each of the designated donor base stations is configured, the measurement parameter is sent to the wireless backhaul base station, and the measurement reporting information sent by the wireless backhaul base station is received, herein the measurement reporting information includes the measurement result obtained by measuring each of the designated donor base stations through the wireless backhaul base station according to the measurement parameter; and the donor base station capable of providing wireless backhaul service for the wireless backhaul base station is determined from among the designated donor base stations according to the measurement result, and the determined donor base station is configured as the secondary base station. In this way, the accuracy of the secondary base station configuration is improved.
  • FIG. 4 is a flow chart of another method for wireless backhaul connection according to an exemplary embodiment.
  • the method for wireless backhaul connection may be applied in an LTE base station having a coverage within which a wireless backhaul base station is located; the method is built on the basis of the method shown in FIG. 1 .
  • S 130 As shown in FIG. 4 , after S 130 is performed, the following operations S410-S420 may be included.
  • a secondary base station indication message is generated, where the secondary base station indication message includes a secondary base station identifier.
  • the LTE base station after configuring the secondary base station used for wireless backhaul connection for the wireless backhaul base station, the LTE base station needs to inform the wireless backhaul base station of the configured secondary base station.
  • the secondary base station indication message may be used to inform the wireless backhaul base station of the configured secondary base station.
  • the secondary base station indication message is sent to the wireless backhaul base station, so that the wireless backhaul base station determines the secondary base station used for wireless backhaul connection according to the secondary base station identifier, and establishes a connection with the secondary base station.
  • a secondary base station indication message may be generated, herein the secondary base station indication message includes the secondary base station identifier, and the secondary base station indication message may be sent to the wireless backhaul base station.
  • the wireless backhaul base station may determine the secondary base station used for the wireless backhaul connection according to the secondary base station identifier, and establish a connection with the secondary base station, thereby improving the accuracy of the wireless backhaul connection.
  • FIG. 5 is a flow chart of a method for wireless backhaul connection according to an exemplary embodiment.
  • the method for wireless backhaul connection may be applied in a wireless backhaul base station that is located within the coverage of the LTE base station.
  • the method for wireless backhaul connection includes the following operations S510-S520.
  • device type reporting information is generated, where the device type reporting information is configured to indicate that the device type of the wireless backhaul base station is a wireless backhaul type.
  • the LTE base station may be a macro base station with a wide coverage
  • the wireless backhaul base station may be an NR small base station that can transmit data to core network device only by means of the LTE base station or the secondary base station configured by the LTE base station for the wireless backhaul base station.
  • the wireless backhaul base station When the wireless backhaul base station needs the secondary base station to assist in transmitting data, it will generate device type reporting information configured to indicate that the device type of the wireless backhaul base station is the wireless backhaul type, so that the LTE base station may configure the secondary base station used for wireless backhaul connection for the wireless backhaul base station after receiving the device type reporting information.
  • the wireless backhaul base station may send the device type reporting information to the LTE base station during the random access process initiated for the LTE base station.
  • the device type reporting information is added into a random access request message, and the random access request message is sent to the LTE base station.
  • the wireless backhaul base station may send the device type reporting information to the LTE base station after the random access process initiated for the LTE base station is completed.
  • the device type reporting information is added into the RRC message, and the RRC message is sent to the LTE base station.
  • the device type reporting information is sent to the LTE base station, so that the LTE base station configures, for the wireless backhaul base station according to the device type reporting information, the secondary base station used for the wireless backhaul connection.
  • a device type reporting information is generated, the device type reporting information is configured to indicate that the device type of the wireless backhaul base station is the wireless backhaul type, and the device type reporting information is sent to the LTE base station.
  • the LTE base station may configure, for the wireless backhaul base station according to the device type reporting information, the secondary base station used for wireless backhaul connection , thus the wireless backhaul base station may transmit data to the core network device by means of the secondary base station configured by the LTE, thereby improving the reliability of the wireless backhaul connection, and improving the data transmission efficiency of the wireless backhaul base station.
  • FIG. 6 is a flow chart of another method for wireless backhaul connection according to an exemplary embodiment.
  • the method for wireless backhaul connection may be applied in a wireless backhaul base station that is located within the coverage of the LTE base station. This method is built on the basis of the method shown in FIG. 5 .
  • the wireless backhaul base station also needs to be measured according to the measurement parameter configured by the LTE base station, and send the measurement result to the LTE base station for determining a donor base station capable of providing wireless backhaul services to the wireless backhaul base station, and configuring the determined donor base station as the secondary base station.
  • the method may specifically include the following operations S610-S640.
  • measurement parameter sent by the LTE base station are received, herein the measurement parameter is used to measure each of the designated donor base stations, and each of the designated donor base stations is located within the coverage of the LTE base station.
  • the designated donor base stations may refer to all or a part of the donor base stations within the coverage of the LTE base station. As for whether the designated donor base stations are all or a part of the donor base stations, it is determined autonomously by the LTE base station based on the actual situation.
  • the measurement parameter in S610 may include at least one of:
  • the measurement quantity of the designated measurement in (4-2) above may include: an RSRP or an RSRQ.
  • the measurement quantity of the designated measurement in (4-2) above may include: a load size.
  • the measurement quantity of the designated measurement in (4-2) above may include: an RSRP or an RSRQ, and a load size.
  • a trigger condition for the designated measurement in (4-3) above includes triggering on a periodic basis or triggering by an event.
  • the triggering on a periodic basis refers to triggering measurement reporting according to a certain time period, such as 1 minute; and the triggering by an event refers to triggering measurement reporting when a designated event happens, such as an RSRP measurement value or an RSRQ measurement value of a donor base station exceeds a certain threshold.
  • each of the designated donor base stations is measured according to the measurement parameter to obtain the measurement result.
  • the wireless backhaul base station will measure the RSRP or RSRQ of each of the designated donor base stations, where the obtained measurement result includes the RSRP measurement value or the RSRQ measurement value of each of the designated donor base stations.
  • the wireless backhaul base station will measure the load size of each of the designated donor base stations, where the obtained measurement result includes the load measurement value of each of the designated donor base stations.
  • the wireless backhaul base station will measure the RSRP or RSRQ and the load size of each of the designated donor base stations, where the obtained measurement result includes the RSRP measurement value or the RSRQ measurement value of each of the designated donor base stations, and the load measurement value of each of the designated donor base stations.
  • a trigger condition for the designated measurement may be a triggering on a periodic basis or a triggering by an event
  • the measurement result may be added into the measurement reporting information when the measurement reporting of the triggering on a periodic basis or the triggering by an event is performed.
  • the measurement reporting information is sent to the LTE base station.
  • the measurement parameter sent by the LTE base station is received, and each of the designated donor base stations is measured according to the measurement parameter to obtain the measurement result.
  • the measurement result is added into the measurement reporting information, and the measurement reporting information is sent to the LTE base station.
  • the LTE base station may determine the donor base station capable of providing wireless backhaul services to the wireless backhaul base station from among the designated donor base stations according to the measurement result, and configure the determined donor base station as the secondary base station, thereby improving the accuracy of the secondary base station configuration.
  • FIG. 7 is a flow chart of another method for wireless backhaul connection according to an exemplary embodiment.
  • the method for wireless backhaul connection may be applied in the wireless backhaul base station that is located within the coverage of the LTE base station.
  • the method is built on the basis of the method shown in FIG. 5 .
  • the method for wireless backhaul connection may further include the following operations S710-S740.
  • a secondary base station indication message sent by the LTE base station is received, where the secondary base station indication message includes the secondary base station identifier.
  • the secondary base station indication message is configured to indicate which secondary base station the LTE base station configures for the wireless backhaul base station.
  • the secondary base station used for the wireless backhaul connection is determined according to the secondary base station identifier.
  • a wireless backhaul connection request is sent to the secondary base station.
  • the secondary base station indication message sent by the LTE base station is received, herein the secondary base station indication message includes the secondary base station identifier; the secondary base station used for the wireless backhaul connection is determined according to the secondary base station identifier, and the wireless backhaul connection request is sent to the secondary base station; responsive to that a connection consent message sent by the secondary base station for the wireless backhaul connection request is received, a connection with the secondary base station is established according to the connection consent message, thereby improving the accuracy of the wireless backhaul connection.
  • the present disclosure also provides embodiments of the apparatus for wireless backhaul connection.
  • FIG. 8 is a block diagram of an apparatus for wireless backhaul connection according to an exemplary embodiment.
  • the apparatus for wireless backhaul connection of the apparatus may be applied in an LTE base station having a coverage within which a wireless backhaul base station is located, the apparatus is used to perform the method for wireless backhaul connection shown in FIG. 1 .
  • the apparatus for wireless backhaul connection may include:
  • the device type reporting information sent by the wireless backhaul base station is received, herein the device type reporting information is configured to indicate that the device type of the wireless backhaul base station is a wireless backhaul type, and the secondary base station used for the wireless backhaul connection is configured for the wireless backhaul base station according to the device type reporting information.
  • the wireless backhaul base station may transmit data to the core network device by means of the secondary base station configured by LTE, thereby improving the reliability of the wireless backhaul connection and improving the data transmission efficiency of the wireless backhaul base station.
  • the configuring module 82 may include:
  • the measurement parameter includes at least one of:
  • the measurement quantity of the designated measurement includes an RSRP or an RSRQ.
  • the measurement result includes an RSRP measurement value or an RSRQ measurement value of each of the designated donor base stations; as shown in FIG. 10 , the first determining sub-module 94 may include: a second determining sub-module 101, configured to determine a donor base station capable of providing wireless backhaul services to the wireless backhaul base station according to the RSRP measurement value or the RSRQ measurement value of each of the designated donor base stations, and configure the determined donor base station as the secondary base station.
  • the determination method may include, but is not limited to the following three: selecting a maximum measurement value from the RSRP measurement values or the RSRQ measurement values of the designated donor base stations, and configuring the donor base station corresponding to the maximum measurement value as the secondary base station; or sorting the RSRP measurement values or the RSRQ measurement values of the designated donor base stations in descending order, selecting one or more relatively large measurement values, and configuring donor base station(s) corresponding to the one or more relatively large measurement values as the secondary base station; or selecting each measurement value greater than the first set threshold from the RSRP measurement values or the RSRQ measurement values of the designated donor base stations, and configuring the donor base station corresponding to each measurement value greater than the first set threshold as the secondary base station.
  • the measurement quantity of the designated measurement includes a load size.
  • the measurement result includes the load measurement value of each of the designated donor base stations.
  • the first determining sub-module 94 may include: a third determining sub-module 111, configured to determine a donor base station capable of providing wireless backhaul services to the wireless backhaul base station according to the load measurement value of each of the designated donor base stations, and configure the determined donor base station as the secondary base station.
  • the determination method may include, but is not limited to, the following three: selecting a minimum measurement value from the load measurement values of the designated donor base stations, and configuring the donor base station corresponding to the minimum measurement value as the secondary base station; or sorting the load measurement values of the designated donor base stations in ascending order, selecting one or more relatively small measurement values, and configuring donor base station(s) corresponding to the one or more relatively small measurement values as the secondary base station; or selecting each measurement value smaller than the second set threshold from the load measurement values of the designated donor base stations, and configuring the donor base station corresponding to each measurement value smaller than the second set threshold as the secondary base station.
  • the measurement quantity of the designated measurement includes an RSRP or an RSRQ and a load size; the measurement result includes the RSRP measurement value or the RSRQ measurement value of each of the designated donor base stations, and the load measurement value of each of the designated donor base stations.
  • the first determining sub-module 94 may include: a fourth determining sub-module, configured to determine a donor base station capable of providing wireless backhaul services to the wireless backhaul base station according to the RSRP measurement value or the RSRQ measurement value of each of the designated donor base stations, and the load measurement value of each of the designated donor base stations, and configure the determined donor base station as the secondary base station. For example, a donor base station with a larger RSRP measurement value or a larger RSRQ measurement value and a smaller load measurement value is selected and configured as the secondary base station.
  • a trigger condition for the designated measurement includes triggering on a periodic basis or triggering by an event.
  • the triggering on a periodic basis refers to triggering measurement reporting according to a certain time period, such as 1 minute; and the triggering by an event refers to measurement reporting when a designated event happens, such as an RSRP measurement value or an RSRQ measurement value of a donor base station exceeds a certain threshold.
  • the measurement parameter used to measure each of the designated donor base stations is configured, the measurement parameter is sent to the wireless backhaul base station, and the measurement reporting information sent by the wireless backhaul base station is received, herein the measurement reporting information includes the measurement result obtained by measuring each of the designated donor base stations through the wireless backhaul base station according to the measurement parameter; and the donor base station capable of providing wireless backhaul service for the wireless backhaul base station is determined from among the designated donor base stations according to the measurement result, and the determined donor base station is configured as the secondary base station. In this way, the accuracy of the secondary base station configuration is improved.
  • the apparatus for wireless backhaul connection may further include:
  • a secondary base station indication message may be generated, herein the secondary base station indication message includes the secondary base station identifier, and the secondary base station indication message may be sent to the wireless backhaul base station.
  • the wireless backhaul base station may determine the secondary base station used for the wireless backhaul connection according to the secondary base station identifier, and establish a connection with the secondary base station, thereby improving the accuracy of the wireless backhaul connection.
  • FIG. 14 is a block diagram of an apparatus for wireless backhaul connection according to an exemplary embodiment.
  • the apparatus is applied in a wireless backhaul base station that is located within a coverage of the LTE base station and is used to perform the method for wireless backhaul connection shown FIG. 5 .
  • the apparatus for wireless backhaul connection may include:
  • a device type reporting information is generated, the device type reporting information is configured to indicate that the device type of the wireless backhaul base station is the wireless backhaul type, and the device type reporting information is sent to the LTE base station.
  • the LTE base station may configure, for the wireless backhaul base station according to the device type reporting information, the secondary base station used for wireless backhaul connection , thus the wireless backhaul base station may transmit data to the core network device by means of the secondary base station configured by the LTE, thereby improving the reliability of the wireless backhaul connection, and improving the data transmission efficiency of the wireless backhaul base station.
  • the first sending module 142 may include: a first sending sub-module 151, configured to send the device type reporting information to the LTE base station during a random access process initiated for the LTE base station.
  • the first sending module 142 may include: a second sending sub-module 161, configured to send the device type reporting information to the LTE base station after a random access process initiated for the LTE base station is completed.
  • the apparatus for wireless backhaul connection may further include:
  • the measurement parameter includes at least one of:
  • the measurement quantity of the designated measurement includes an RSRP or an RSRQ.
  • the measuring module 172 may include: a first measuring sub-module 181, configured to measure the RSRP or the RSRQ of each of the designated donor base stations, where the obtained measurement result includes an RSRP measurement value or an RSRQ measurement value of each of the designated donor base stations.
  • the measurement quantity of the designated measurement includes a load size.
  • the measuring module 172 may include: a second measuring sub-module 191, configured to measure the load size of each of the designated donor base stations, where the obtained measurement result includes a load measurement value of each of the designated donor base stations.
  • the designated measurement quantity includes a reference signal receiving power (RSRP) or a reference signal receiving quality (RSRQ), and a load size.
  • the measuring module 172 may include: a third measuring sub-module 201, configured to measure an RSRP or an RSRQ and the load size of each of the designated donor base stations, where the obtained measurement result includes an RSRP measurement value or an RSRQ measurement value of each of the designated donor base stations, and a load measurement value of each of the designated donor base stations.
  • a trigger condition for the designated measurement includes triggering on a periodic basis or triggering by an event.
  • the adding module 173 may include: an adding sub-module 211, configured to add the measurement result to the measurement reporting information when the measurement reporting of the triggering on a periodic basis or the triggering by an event is performed.
  • the measurement parameter sent by the LTE base station is received, and each of the designated donor base stations is measured according to the measurement parameter to obtain the measurement result.
  • the measurement result is added into the measurement reporting information, and the measurement reporting information is sent to the LTE base station.
  • the LTE base station may determine the donor base station capable of providing wireless backhaul services to the wireless backhaul base station from among the designated donor base stations according to the measurement result, and configure the determined donor base station as the secondary base station, thereby improving the accuracy of the secondary base station configuration.
  • the apparatus for wireless backhaul connection may further include:
  • the secondary base station indication message sent by the LTE base station is received, herein the secondary base station indication message includes the secondary base station identifier; the secondary base station used for the wireless backhaul connection is determined according to the secondary base station identifier, and the wireless backhaul connection request is sent to the secondary base station; responvie to that a connection consent message sent by the secondary base station for the wireless backhaul connection request is received, a connection with the secondary base station is established according to the connection consent message, thereby improving the accuracy of the wireless backhaul connection.
  • the apparatus embodiment since it basically corresponds to the method embodiment, please refer to the description of the method embodiment for related parts.
  • the apparatus embodiments described above are merely illustrative.
  • the units described above as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one unit, or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the objectives of the solutions of the present disclosure. Those of ordinary skill in the art can understand and implement it without creative work.
  • the present disclosure also provides a non-transitory computer-readable storage medium on which a computer program is stored, and the computer program is used to execute the method for wireless backhaul connection described in any one of FIG. s. 1 to 4 above.
  • the present disclosure also provides a non-transitory computer-readable storage medium on which a computer program is stored, and the computer program is used to execute the method for wireless backhaul connection described in any one of FIG. s. 5 to 7 above.
  • the present disclosure also provides an apparatus for wireless backhaul connection, the apparatus is applied in an LTE base station having a coverage within which a wireless backhaul base station is located, and the apparatus includes:
  • FIG. 23 is a schematic structural diagram of an apparatus for wireless backhaul connection according to an exemplary embodiment.
  • the apparatus 2300 may be provided as an LTE base station.
  • the apparatus 2300 includes a processing component 2322, a wireless transmitting/receiving component 2324, an antenna component 2326, and a signal processing part specific to a wireless interface.
  • the processing component 2322 may further include one or more processors.
  • One of the processors in the processing component 2322 may be configured to execute any of the above-mentioned method for wireless backhaul connections.
  • the present disclosure also provides an apparatus for wireless backhaul connection, applied in a wireless backhaul base station that is located within a coverage of a Long Term Evolution (LTE) base station, and the apparatus includes:
  • FIG. 24 is a schematic structural diagram of an apparatus for wireless backhaul connection according to an exemplary embodiment.
  • the apparatus 2400 can be provided as a wireless backhaul base station.
  • the apparatus 2400 includes a processing component 2422, a wireless transmitting/receiving component 2424, an antenna component 2426, and a signal processing part specific to a wireless interface.
  • the processing component 2422 may further include one or more processors.
  • One of the processors in the processing component 2422 may be configured to execute any of the method for wireless backhaul connections described above.

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CN109451824B (zh) 2022-08-12
WO2019204992A1 (fr) 2019-10-31
ES2971349T3 (es) 2024-06-04
EP3780668A4 (fr) 2021-12-08

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